Article
Nanoscience & Nanotechnology
Lingchao Zhang, Xin Zhang, Wenxuan Zhang, Zhenguo Huang, Fang Fang, Juan Li, Limei Yang, Changdong Gu, Wenping Sun, Mingxia Gao, Hongge Pan, Yongfeng Liu
Summary: High thermal stability and sluggish absorption/desorption kinetics are limitations for using MgH2 as a hydrogen storage medium. Introducing a suitable catalyst, such as the novel nanoparticulate ZrNi, can significantly improve the hydrogen storage properties. The catalytic reaction of nano-ZrNi during the first de-/hydrogenation cycle forms active species that enhance the breaking and rebonding of H-H bonds and provide multiple hydrogen diffusion channels, leading to remarkably improved hydrogen absorption and desorption capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ren Zou, Jialing Li, Weijin Zhang, Gangtie Lei, Zhi Li, Hujun Cao
Summary: By introducing nitrogen anions, a N-doped K2Ti6O13 (N-KTiO) catalyst with reduced band gap was obtained, which improved the kinetics and cycling stability of the Mg/MgH2 system. The peak temperature of MgH2 with 5 wt% N-KTiO was significantly lower than those of TiO2 catalysed and pure ones, and it absorbed 4.6 wt% H2 in 1 hour even at room temperature. After cycling for 200 times at 300 degrees C, the H2 capacity remained at 6.8 wt% with a retention as high as 94.4%. The research provides insights for developing effective catalysts for light metal hydrogen storage materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Peng Wang, Zhihui Tian, Zexuan Wang, Chaoqun Xia, Tai Yang, Xiulong Ou
Summary: In this study, transition metal sulfides were used as catalysts to enhance the hydrogen storage behaviors of MgH2. The addition of sulfides significantly increased the desorption and absorption kinetics of hydrogen in MgH2, with MgH2-TiS2 showing the best performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Cong Peng, Qingan Zhang
Summary: In this study, a high-efficient catalyst comprising of YCxFy nanosheets-supported Ni nanoparticles was designed to address the sluggish kinetics and poor cyclic stability of MgH2. The as-achieved MgH2-10 wt.% Ni-30/YCxFy composite exhibits superior hydrogen desorption kinetics and high capacity retention. The in situ formed Mg2NiH4 and YH3 catalytic phases accelerate the hydrogen desorption kinetics, while the dispersed MgF2 and carbon species prevent the crystallite growth, particle aggregation, and catalyst redispersion, contributing to an excellent cyclic stability.
Article
Materials Science, Multidisciplinary
Xiao-Sheng Liu, Hai-Zhen Liu, Ning Qiu, Yan-Bing Zhang, Guang-Yao Zhao, Li Xu, Zhi-Qiang Lan, Jin Guo
Summary: In this study, NbF5 was successfully used to improve the cycling properties of MgH2-AlH3 composite, leading to a stable hydrogen desorption capacity during cycling. The addition of NbF5 is able to reduce pulverization of the composite during cycling, enhancing the material's stability.
Article
Chemistry, Physical
Jingxi Zhang, Huang Liu, Pei Sun, Xueyi Guo, Chengshang Zhou, Zhigang Zak Fang
Summary: The high operation temperature limits the practical applications of magnesium hydride. The hydrogenation performance at relatively low temperatures degrades rapidly during cycling. However, the hydrogenation kinetic rate can be restored by subjecting the performance-degraded sample to an ultra-high-energy high-pressure planetary ball mill again. The nanocrystalline structure with a high concentration of defects in the ball-milled Mg-based material is critical for achieving a good kinetic rate of hydrogen adsorption at room temperature. The defect concentration effects on hydrogen absorption are more significant than crystallite size.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Crystallography
Nuraini Ruslan, Muhammad Syarifuddin Yahya, Md Nurul Islam Siddique, Ashish Prabhakar Yengantiwar, Mohammad Ismail, Md Rabiul Awal, Mohd Zaki Mohd Yusoff, Muhammad Firdaus Asyraf Abdul Halim Yap, Nurul Shafikah Mustafa
Summary: Metal hydrides such as MgH2 and NaBH4 have high potential for solid-state hydrogen storage. However, a dehydrogenation process is required prior to hydrogen utilization. The hydrolysis method is a possible way to extract or generate hydrogen, but issues like passivation layer, high cost and sluggish self-hydrolysis can be overcome with the help of catalysts. Studies have shown that adding catalysts like chloride, oxide, fluoride, platinum, ruthenium, cobalt, and nickel can significantly enhance the amount of hydrogen released during the hydrolysis of MgH2 and NaBH4.
Article
Nanoscience & Nanotechnology
Haizhen Liu, Chenglin Lu, Xinchun Wang, Li Xu, Xiantun Huang, Xinhua Wang, Hua Ning, Zhiqiang Lan, Jin Guo
Summary: The combination of V2C and Ti3C2 in MgH2 significantly improves hydrogen storage performance, enhancing hydrogen desorption rate and cycling stability. V2C and Ti3C2 promote the hydrogen-releasing process of MgH2 and may facilitate the transfer of hydrogen atoms or molecules through grain boundaries and interfaces. This study provides new insights into the hydrogen storage behaviors and mechanisms of MgH2 catalyzed by MXenes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Liang Dan, Hui Wang, Xiaobao Yang, Jiangwen Liu, Liuzhang Ouyang, Min Zhu
Summary: This study demonstrates the significant improvement of hydrogen sorption performances of MgH2 by synthesizing Nb-doped TiO2 solid-solution-type catalysts. The catalyzed MgH2 is able to absorb 5% of H2 at room temperature for 20 seconds, release 6% of H2 at 225 degrees C within 12 minutes, and achieve complete dehydrogenation at 150 degrees C under a dynamic vacuum atmosphere. The success of solid solution-type catalysts in MgH2 provides a demonstration and inspiration for the development of high-performance catalysts and solid-state hydrogen storage materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Zhaojie Wu, Jianhua Fang, Na Liu, Jiang Wu, Linglan Kong
Summary: The MgH2+ML-Ti3C2 composite hydrogen storage system was successfully synthesized, reducing the initial desorption temperature to 142°C with a capacity of 6.56%. The kinetics of hydrogen absorption and desorption can be enhanced by ML-Ti3C2, attributed to two synergistic effects: Ti facilitates the dissociation or recombination of hydrogen molecules, and electron transfer generated by multivalent Ti promotes the conversion of hydrogen.
Article
Engineering, Environmental
Zhiqiang Lan, Xiaobin Wen, Liang Zeng, Ziqi Luo, Huiren Liang, Weitao Shi, Feifan Hong, Haizhen Liu, Hua Ning, Wenzheng Zhou, Jin Guo
Summary: The incorporation of (Ni-V2O3)@C nanoparticles was introduced to enhance the hydrogen storage performance of Mg/MgH2 systems. The composite sample exhibited improved hydrogenation and dehydrogenation kinetics, with a lower initial hydrogenation temperature and higher hydrogen absorption and desorption capacities compared to pristine MgH2. The addition of (Ni-V2O3)@C nanoparticles acted as a hydrogen pump, promoting hydrogen diffusion and dissociation within the Mg/MgH2 system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jialing Li, Ren Zou, Yajun Cui, Gangtie Lei, Zhi Li, Hujun Cao
Summary: Researchers synthesized an N ion-doped Na2TiO3 catalyst to improve the dehydrogenation properties of MgH2, resulting in lower peak temperature and increased hydrogen release. The modified MgH2 also showed improved cycle stability and high reversible hydrogen capacity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Haiguang Gao, Yingyan Zhao, Xu Zhang, Baozhou Zhao, Zhen Jia, Yana Liu, Xiaohui Hu, Yunfeng Zhu
Summary: This study introduces solid-solution MAX phase TiVAlC catalyst directly into the MgH2 system to improve its hydrogen storage performance. The excellent catalytic activity of TiVAlC catalyst can be explained by abundant electron transfer at external and internal interfaces. The influence of impurity phase on the overall activity of catalysts has also been studied, providing a unique method for designing composite catalyst to improve hydrogen storage performance of MgH2.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
M. Ismail
Summary: Magnesium hydride (MgH2) is a promising material for solid-state hydrogen storage due to its reversible nature and high storage capacity. However, slow kinetics and high stability have hindered its commercialization. By adding hafnium tetrachloride (HfCl4) as a catalyst, the desorption kinetics and thermodynamics of MgH2 can be improved, with the optimal enhancement observed at 15 wt% HfCl4 doping.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Pawan K. Soni, Ashish Bhatnagar, M. A. Shaz
Summary: In this study, the synergistic effect of Fe nanoparticles and hollow carbon spheres composite on the hydrogen storage properties of MgH2 was investigated. The MgH2-Fe-HCS system exhibited an onset desorption temperature of 225.9 degrees C and a hydrogen storage capacity of 5.60 wt%. The MgH2-Fe-HCS composite absorbed 5.60 wt% hydrogen within 55 s and desorbed 5.50 wt% hydrogen within 12 min under 20 atm H2 pressure at 300 degrees C. The desorption activation energy of MgH2-Fe-HCS was found to be 84.9 kJ/mol. The composite also showed better cyclability up to 24 cycles of hydrogenation and dehydrogenation of MgH2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Huang Liu, Pei Sun, Robert C. Bowman, Zhigang Zak Fang, Yong Liu, Chengshang Zhou
JOURNAL OF POWER SOURCES
(2020)
Article
Engineering, Chemical
Bin Liu, Heng Duan, Liangsheng Li, ChengShang Zhou, Junyang He, Haibo Wu
Summary: This article introduces a new industrial method for preparing spherical high entropy alloy powders and discusses their characteristics. The powder has a single structure and high hardness, making it suitable for superhard materials.
Article
Chemistry, Physical
Tongwen Huang, Huang Liu, Chengshang Zhou
Summary: The study investigates the effect of driving force on the activation energy of catalyzed MgH2 systems, showing that high driving force leads to higher hydrogenation activation energy. However, dehydrogenation activation energy remains unchanged under different driving forces.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Chengshang Zhou, Ke Li, Tongwen Huang, Pei Sun, Li Wang, Yanshan Lu, Zhigang Zak Fang
Summary: This study demonstrates the in situ formation of nanocrystalline MgH2 by hydrogenation at room temperature and investigates the effects of hydrogenation variables on the nanostructure. The results show that hydrogenated samples under lower pressure have larger MgH2 nanocrystallites and improved dehydrogenation kinetics. The study identifies hydrogenation pressure, temperature, and defect density as critical parameters affecting the nucleation rate of MgH2.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
Chengshang Zhou, Fangrui Lin, Pei Sun, Zoujun Chen, Zhongyuan Duan, Xianzhi Zhu, Yong Liu, Zhigang Zak Fang
Summary: This paper introduces a novel approach called constrained hydrogenation assisted densification (CHAD) for improving the density of powder metallurgy Ti alloys. The results demonstrate that CHAD can effectively reduce or eliminate residual porosity in Ti alloys and improve their tensile properties. This method is considered as an efficient and cost-effective technique for manufacturing high-density Ti alloys.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Jingxi Zhang, Huang Liu, Pei Sun, Chengshang Zhou, Xueyi Guo, Zhigang Zak Fang
Summary: In this study, MgO doping and air exposure methods were used to add oxygen to MgH2-TiH2 materials, and the hydrogen storage properties of these materials were systematically investigated. The results showed that MgO doping accelerated the absorption kinetics at ambient temperature, hindered the growth of Mg crystalline, and reduced the desorption temperature. On the contrary, air exposure significantly deteriorated the kinetics of MgH2-TiH2 under both ambient and high temperature. The hydrogenation kinetics of the air-exposed sample can be recovered under cycling. Our results indicated that the effect of MgO is highly dependent on the means to introduce MgO and the location of MgO in the matrix structure. Air exposure is the main factor for the degradation of hydrogen storage properties, but MgO doping positively affects the performance of Mg-based hydride.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Huang Liu, Jingxi Zhang, Pei Sun, Chengshang Zhou, Yong Liu, Zhigang Zak Fang
Summary: Hydrogen storage is a critical barrier in the hydrogen-based clean energy supply chain. TiFe alloy, a candidate material for stationary hydrogen storage, is still in the early stage of understanding its hydrogen storage properties and developing industrially deployable storage technologies. This study systematically investigates the effects of oxygen on the equilibrium pressure of TiFe-H intermetallic hydride, revealing the influence of oxygen on the (de)hydrogenation behavior and thermodynamics of the TiFe-H system.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Ke Li, Tongwen Huang, Yunhe Gao, Chengshang Zhou
Summary: This study introduces a method of using polymethyl methacrylate (PMMA) nano-coating to improve the antioxidant properties of hydrogen storage alloys. The results show that the PMMA-coating enhances the capacity, kinetics, and thermodynamic properties of the alloys compared to uncoated alloys. It also provides effective protection against oxygen contamination and oxidation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Huang Liu, Jingxi Zhang, Pei Sun, Chengshang Zhou, Yong Liu, Zhigang Zak Fang
Summary: In this study, the effect of oxygen addition on the phase composition and hydrogen storage properties of TiFe alloys was systematically investigated. The results showed that high oxygen content improved the initial hydrogen sorption of TiFe, but reduced the hydrogen capacity. Increasing oxygen content also slightly increased the hydrogenation equilibrium pressure, but had almost no impact on the thermodynamics of TiFe alloy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jingxi Zhang, Huang Liu, Pei Sun, Xueyi Guo, Chengshang Zhou, Zhigang Zak Fang
Summary: The high operation temperature limits the practical applications of magnesium hydride. The hydrogenation performance at relatively low temperatures degrades rapidly during cycling. However, the hydrogenation kinetic rate can be restored by subjecting the performance-degraded sample to an ultra-high-energy high-pressure planetary ball mill again. The nanocrystalline structure with a high concentration of defects in the ball-milled Mg-based material is critical for achieving a good kinetic rate of hydrogen adsorption at room temperature. The defect concentration effects on hydrogen absorption are more significant than crystallite size.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Huang Liu, Jingxi Zhang, Chengshang Zhou, Pei Sun, Yong Liu, Zhigang Zak Fang
Summary: This paper investigates the effect of Nb alloying on the microstructure and hydrogen storage properties of Ti-Fe-Zr-Mn-Nbx alloys. The addition of 2% Nb enables a good combination of the hydrogen capacity and activation property, while Zr-rich phases play a critical role in the activation behavior. However, high Nb addition (> 4%) leads to the reduction of Zr-rich phases and deteriorates the activation kinetics. Nb addition also promotes the formation of the TiFe main phase and increases capacities at ambient temperature. The correlations between microstructure and hydrogen storage performance provide insights into tailoring hydrogen storage properties by alloying TiFe with multi-elements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Tongwen Huang, Chengshang Zhou
Summary: This study proposes a new model based on the classical JMAK model, taking into account the preferential growth of the hydride phase from the surface into the bulk in Mg-based hydrogen storage alloys, resulting in a diffusion barrier effect. A new parameter, surface diffusion barrier index b, is introduced to quantify the surface diffusion barrier effect. The modified JMAK model demonstrates improved fitting performance for the hydrogenation analysis in multiple Mg-based systems. Additionally, the relationship between diffusion barrier index b and the reaction rate is discussed.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jingxi Zhang, Huang Liu, Chengshang Zhou, Pei Sun, Xueyi Guo, Zhigang Zak Fang
Summary: In this study, equiatomic high entropy alloys (HEAs) such as TiVNbZrFe were used as catalysts to improve the kinetics of MgH2. The results showed that TiVNbZrFe alloy exhibited excellent catalytic effect, with a lower temperature and pressure required for hydrogen release and absorption. This alloy also demonstrated stable cycling properties with a significant reduction in activation energy compared to pure MgH2.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Chengshang Zhou, Yunhe Gao, Robert C. Bowman, Jingxi Zhang, Huang Liu, Pei Sun, Zhigang Zak Fang
Summary: This study proposes an efficient method using TGA to measure the thermodynamic parameters of metal hydrides. By cycling catalyzed magnesium hydride and analyzing TGA curves, absorption/desorption equilibrium temperatures and reaction enthalpies and entropies were determined. The results demonstrate that TGA can provide accurate measurements and is a more efficient alternative to the traditional PCT method.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Review
Chemistry, Inorganic & Nuclear
Chengshang Zhou, Jingxi Zhang, Robert C. Bowman Jr, Zhigang Zak Fang
Summary: Magnesium-based hydrides are considered promising candidates for solid-state hydrogen storage and thermal energy storage due to their high hydrogen capacity, reversibility, and abundant magnesium elements. Catalytic doping with titanium-based catalysts is an effective approach to improving the sluggish kinetics of MgH2. In recent decades, intensive efforts have been made to understand the fundamental principles of catalysis for the Mg-H-2 reaction using titanium-based additives.
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)
